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(No Model.)

L. W. TRACY.

MACHINE FOR. COVERING INSULATED CONDUCTING WIRE WITH LEAD. No. 434,008. Patented Aug. 12, 1890.

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UNITED STATES,

ATENT OFFICE.

LEIVIS WV. TRACY, OF NEWV YORK, N. Y., ASSIGNOR OF ONE-HALF TO JAMES E. GRANNISS, OF SAME PLACE.

MACHINE FOR COVERING INSULATED CONDUCTING-WIRE WITH LEAD.

SPECIFICATION forming part of Letters Patent No. 434,008, dated August 12, 1890.

Application filed May 28, 1890. Serial No. 358,468. (No model.)

To all whom it may concern.-

Be it known that I, LEWIS IV. TRACY, a citizen of the United States, residing at New York, State of New York, have invented certain new and useful Improvements in Machines for Covering Insulated Electrical Oonductors with Lead, of which the following is a specification.

The object of my invention is to provide a machine in which the core-bar and die are both mounted in the same block, and the block located in the lower end of the lead-cylinder instead of being interposed between the cylinder and the head of the press, as is usual in this class of machines. With such an organization I not only reduce the cost of con struction of the block for carrying the corebar and die, but- I am also enabled by my invention to readily remove the block to change the die and core-bar to adapt it to differentsized conductors, or for the substitution of other blocks.

So far as I am aware I am the first to provide such a core-bar and die-holder, preferably formed of one piece, and to be carried by the head of the press and located within the lower end of the lead-cylinder.

In the accompanying drawings, Figure 1 is a vertical longitudinal section of so much of the apparatus as is necessary to illustrate the invention; Fig. 2, a plan of same with the cylinder B removed; Fig. 3, a transverse section of the block in which the core-bar and die are seated, and Fig. 4 a longitudinal section of the same.

A is the head of the press or a block or plate resting thereon, B the lead-cylinder,

' sired, the parts 0 C may be connected at the top by a cross-piece 0 This is shown in Figs. 1, 2, and 3, or the part 0 may be omitted and the lead-chamber D be entirely open atthetop. The core-barFisinserted through the opening in the wall of the cylinder, and preferably has a screw-threaded seat in the portion 0 of the block, by means of which it may be adjusted. The die Gis seated in the opposite portion 0' of the block.

By withdrawing the core-bar'and removing the lead from the chamber D the die G may be pushed from its seat and removed through the lead chamberD. At the close of the days work, or wheneveritis desired to change the die andcore-bar,orifitiswishedtosubstituteadifferent block 0, the block may be pressed out of the cylinder by the operation of a hydraulic press. To insure the proper placement of the block D with reference to the lead-cylinder, a dowel-pin Z) on the under side of the block may enter a corresponding socket in the head of the press. The block Bis turned or ground to accurately fit thelower end of the cylinder, and there is no danger of the escape of lead between the circumferential Wall of the block and the interior wall of the cylinder. If there should be any such leakage above the corebar, the lead would merely flow out through the opening E around the core-bar and could not come in contact with the insulated conductor passing through the machine. I

In another application filed by me simultaneously herewith I have shown a core-bar or core-bar holder, formed in a block occupying the lower end of a lead-cylindenaslherein described; but in that case the die is mounted in the wall of the lead-cylinder.

WVith my present invention it is obvious that there can be no possible displacement of the end of the core-bar with reference to the die, since the core bar and the die are both mounted in or form part of the solid block 0. For instance, the uneven seating of the block 0 upon the head of the press would, with my present invention, not change the relation of the core-bar and die, and the openings E in the Wall of the lead-press being made of sufficient diameter, any slight displacement of the block with reference to the lead-cylinder would not interfere with the entrance and exit of the cable.

I claim as my invention- 1. The combination, substantially as set forth, of the lead-cylinder and a block occupying the end thereof, said block carrying both the core-bar and die, and the walls of the cylinderbeing formed with corresponding openings.

2. The combination, substantially as set forth, of the vertical lead-cylinder having openings in the walls thereof, and the block C, fitting in one end of the lead-cylinder and having a pipe-forming chamber D, and portions 0 0 respectively, supporting the hori- [0 zontal core-bar and die.

3. The combination, with the vertical lead- I cylinder, of a block 0, fitting Within the end thereof, and having portions 0 O respectively, supporting the horizontal core-bar and die, and across-piece C connecting the pai ts 0' C In testimony whereof I-have hereunto subscribed by name.

v LEWIS W. TRACY.

Witnesses:

LLOYD B. WVIGHT, FRANK S. OBER. 

